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Related Experiment Videos

Glucose production in the human placenta.

J Leonce1, N Brockton, S Robinson

  • 1Metabolic Medicine and Obstetrics, Imperial College London, St. Mary's Hospital, Praed Street, London W2 1NY, UK. j.leonce@imperial.ac.uk

Placenta
|April 19, 2006
PubMed
Summary

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The placenta

Area of Science:

  • Reproductive biology
  • Maternal-fetal medicine
  • Endocrinology

Background:

  • Maternal-to-fetal glucose transfer primarily occurs via placental facilitated diffusion.
  • Small for gestational age (SGA) pregnancies exhibit lower fetal glucose concentrations, persisting post-delivery.
  • While GLUT1 is the main placental glucose transporter, its deficiency is not linked to lower fetal glucose in SGA pregnancies.

Purpose of the Study:

  • Investigate the potential role of the placenta in supplying glucose for fetal needs.
  • Explore the presence and function of placental glucose-6-phosphatase and associated transporters.
  • Determine the significance of placental glucose secretion in both normal and growth-restricted pregnancies.

Main Methods:

  • Utilized glucose isotope studies in pregnant individuals to trace glucose transfer and dilution in fetal circulation.

Related Experiment Videos

  • Examined the expression and activity of placental glucose transporters, including GLUT1 and others.
  • Investigated the presence of a specific placental glucose-6-phosphatase distinct from the hepatic form.

    • Main Results:

    • Glucose isotope dilution in fetal circulation suggests potential placental glucose secretion.
    • Evidence indicates the possible presence of a unique placental glucose-6-phosphatase.
    • The role of other placental glucose transporters in fetal glucose supply remains largely unknown.

    Conclusions:

    • The placenta may contribute to fetal glucose supply through secretion, a process not fully understood.
    • Further research is needed to elucidate the mechanisms and implications of placental glucose secretion in pregnancy.
    • Understanding placental glucose metabolism is crucial for managing fetal growth and development, especially in SGA cases.